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Aeromagnetic maps and second vertical derivative maps of Great Sitkin Island, Northern Adak Island, and part of northeastern Umnak Island, Alaska
Isidore Zietz, Roland G. Henderson
1949, Open-File Report 49-9
The eight attached maps were constructed from data taken on Project Volcano in the summer of 1947. The project was sponsored by the Office of Naval Research and conducted by the U.S. Geological Survey in cooperation with the Naval Ordnance Laboratory. Field work was done by Fred Keller, Jr., and...
Chromite deposits near Seiad and McGuffy Creeks, Siskiyou County, California
Francis Gerritt Wells, Clay Taylor Smith, Garn A. Rynearson, John S. Livermore
1949, Bulletin 948-B
The chromite deposits described in this report are in northcentral Siskiyou County, Calif. They are in two long tabular masses of peridotite which lie end to end and trend northnorthwest across the valley of the Klamath River. The Seiad Creek-Red Butte mass extends 10 miles north of the river and...
Geochemical prospecting for ores; a progress report
Herbert Edwin Hawkes
1949, Economic Geology (44) 706-712
Methods of prospecting for mineral deposits by means of chemical studies of residual soil, alluvium, glacial moraine, vegetation, and natural water were first applied on a systematic scale in Scandinavia and Russia about 15 years ago. Since the war, work in this field has been undertaken by several independent groups...